774401447999 has 4 divisors (see below), whose sum is σ = 774767943936. Its totient is φ = 774034952064.

The previous prime is 774401447987. The next prime is 774401448053. The reversal of 774401447999 is 999744104477.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 774401447999 - 2¹² = 774401443903 is a prime.

It is a super-2 number, since 2×774401447999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774401447909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183244799 + ... + 183249024.

It is an arithmetic number, because the mean of its divisors is an integer number (193691985984).

Almost surely, 2^774401447999 is an apocalyptic number.

774401447999 is a deficient number, since it is larger than the sum of its proper divisors (366495937).

774401447999 is a wasteful number, since it uses less digits than its factorization.

774401447999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366495936.

The product of its (nonzero) digits is 64012032, while the sum is 65.

The spelling of 774401447999 in words is "seven hundred seventy-four billion, four hundred one million, four hundred forty-seven thousand, nine hundred ninety-nine".